DE1253034B - Shearing device for cutting a web of material - Google Patents

Shearing device for cutting a web of material

Info

Publication number
DE1253034B
DE1253034B DESCH36655A DESC036655A DE1253034B DE 1253034 B DE1253034 B DE 1253034B DE SCH36655 A DESCH36655 A DE SCH36655A DE SC036655 A DESC036655 A DE SC036655A DE 1253034 B DE1253034 B DE 1253034B
Authority
DE
Germany
Prior art keywords
hollow body
mandrel
shearing device
knife
cutting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DESCH36655A
Other languages
German (de)
Inventor
Fritz Bosshard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schweizerische Industrie Gesellschaft
Original Assignee
Schweizerische Industrie Gesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schweizerische Industrie Gesellschaft filed Critical Schweizerische Industrie Gesellschaft
Publication of DE1253034B publication Critical patent/DE1253034B/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/08—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting using rotary cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Shearing Machines (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. CL: Int. CL:

D21gD21g

Deutsche Kl.: 55 e-5/01 German class: 55 e- 5/01

Nummer: 1253 034Number: 1253 034

Aktenzeichen: Sch 36655 VII b/55eFile number: Sch 36655 VII b / 55e

Anmeldetag: 9. März 1965 Filing date: March 9, 1965

Auslegetag: 26. Oktober 1967Opening day: October 26, 1967

Die Erfindung betrifft eine Schervorrichtung zum Zerschneiden einer Materialbahn, insbesondere einer Papier- oder Kunststoffbahn, mittels eines festen und eines um seine Längsachse drehbaren Messers, von denen eines zwei gegenüberliegende, miteinander verbundene und zur Längsachse etwa parallele Öffnungen für die Materialbahn mit einer Schneidkante aufweist.The invention relates to a shearing device for cutting up a material web, in particular one Paper or plastic web, by means of a fixed knife and a knife that can be rotated about its longitudinal axis, from those of two opposite, interconnected and approximately parallel to the longitudinal axis openings has for the web of material with a cutting edge.

Es ist eine Schervorrichtung dieser Art bekannt, bei welcher das feste Messer durch eine auf einem Zufiihrungstisch befestigte Schiene gebildet wird, während das drehbare Messer aus zwei im Querschnitt halbkreisförmigen Stäben hergestellt ist, von denen der eine das eigentliche Schneidmesser und der andere eine Tragschiene bildet.There is a shearing device of this type known in which the fixed knife by one on one Feed table attached rail is formed, while the rotatable knife is made up of two in cross section semicircular rods are made, one of which is the actual cutting knife and the other forms a mounting rail.

Bei dieser bekannten Schervorrichtung ist das bewegliche Messer um eine zu den beiden Schneidkanten gleichlaufende Achsre drehbar gelagert. Die beiden Schneidkanten werden also über ihre volle Länge gleichzeitig miteinander in Eingriff gebracht. Dies hat zur Folge, daß kein fortschreitender Schnitt, sondern ein »Abschlagen« der Materialbahn erzielt wird, was leicht zu einer unsauberen Schnittfläche führen kann.In this known shearing device, the movable knife is around one to the two cutting edges co-rotating axles rotatably mounted. The two cutting edges are therefore over their full Length brought into engagement with each other at the same time. As a result, no progressing cut, Instead, the material web is "knocked off", which can easily lead to an unclean cut surface can lead.

Die vorliegende Erfindung bezweckt, diesen Nachteil zu beheben und eine Schervorrichtung zu schaffen, mit der ein fortschreitender Schnitt und damit eine saubere Schnittfläche erzielt wird. Dies wird erfindungsgemäß dadurch erreicht, daß das mit gegenüberliegenden Öffnungen versehene Messer ein zylindrischer Hohlkörper, das andere Messer ein im Innern des Hohlkörpers angeordneter, im Bereich der Öffnungen im Querschnitt halbkreis- oder kreisabschnittförmiger Dorn ist und daß die Schneidkanten von Hohlkörper und Dorn an der Schnittstelle spitzwinklig zueinander angeordnet sind.The present invention aims to remedy this disadvantage and to provide a shearing device, with which a progressive cut and thus a clean cut surface is achieved. this will achieved according to the invention in that the knife provided with opposing openings is a cylindrical hollow body, the other knife arranged in the interior of the hollow body, in the area of the openings in cross-section semicircular or circular segment-shaped The mandrel is and that the cutting edges of the hollow body and mandrel are arranged at an acute angle to one another at the interface.

Ein zueinander spitzwinkliger Verlauf der Schneidkanten kann auf einfache Weise dadurch erzielt werden, daß der Hohlkörper in einer seiner beiden Lagerstellen exzentrisch auf dem Dorn gelagert ist. Zweckmäßig sind an den Lagerstellen des Hohlkörpers am Dorn durch Federn vorgespannte Segmente angeordnet. Auf diese Weise kann auftretendes Lagerspiel ausgeglichen werden.A mutually acute-angled course of the cutting edges can be achieved in a simple manner by that the hollow body is mounted eccentrically on the mandrel in one of its two bearing points. It is useful to have segments pretensioned by springs at the bearing points of the hollow body on the mandrel arranged. In this way, any bearing play that occurs can be compensated for.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt. Es zeigtAn exemplary embodiment of the subject matter of the invention is shown in the drawing. It shows

F i g. 1 eine Ansicht der erfindungsgemäßen Schervorrichtung in zusammengebautem Zustand, Fig. 2 einen Schnitt nach Linie H-II in Fig. 1,F i g. 1 shows a view of the shearing device according to the invention in the assembled state, Fig. 2 is a section along line H-II in Fig. 1,

F i g. 3 eine perspektivische Ansicht der Einzelteile der Vorrichtung undF i g. 3 is a perspective view of the individual parts of the device and FIG

Fi g. 4 einen Schnitt nach Linie IV-IV in Fig. 2.Fi g. 4 shows a section along line IV-IV in FIG.

Schervorrichtung zum Zerschneiden einer
MaterialbahnShearing device for cutting a
Material web

Anmelder:Applicant:

Schweizerische Industrie-Gesellschaft,Swiss Industrial Company,

Neuhausen (Schweiz)Neuhausen (Switzerland)

Vertreter:
Dr.-Ing. W. Höger,
Dipl.-Ing. W. Stellrecht M. Sc.
und Dipl.-Phys. Dr. D. Griessbach,
Patentanwälte, Stuttgart 1, Uhlandstr. 16Representative:
Dr.-Ing. W. Höger,
Dipl.-Ing. W. Stellrecht M. Sc.
and Dipl.-Phys. Dr. D. Griessbach,
Patent Attorneys, Stuttgart 1, Uhlandstr. 16

Als Erfinder benannt:
Fritz Bosshard, KaltenbachNamed as inventor:
Fritz Bosshard, Kaltenbach

Beanspruchte Priorität:Claimed priority:

Schweiz vom 22. April 1964 (5180)Switzerland of April 22, 1964 (5180)

Die Schervorrichtung weist einen zylindrischen Hohlkörper 1 auf, der an zwei Lagerstellen 3, 4 drehbar auf einem Dorn 2 gelagert ist. Der Dorn 2 ist starr am nur angedeuteten Maschinengestell 5, beispielsweise einer Verpackungsmaschine, befestigt. Der Hohlkörper 1 weist zwei Ausnehmungen 6 und 7 auf, durch die die durchzuschneidende Materialbahn 8 (Fig. 2) mittels besonderer, nicht dargestellter Führungen geführt wird. Der Dorn 2 ist im Bereich der Ausnehmungen 6, 7 im Querschnitt etwa halbkreisförmig ausgebildet. Er weist eine Schneidkante la auf (Fig. 2), während der Hohlkörper die Gegenschneidkante la trägt, die an der Innenkante der Ausnehmung 7 angeordnet ist. Die beiden Schneidkanten la, la werden durch Schwenkungen des Hohlkörpers 1 in Pfeilrichtung (F i g. 2) aneinander vorbeigeführt und dadurch die Materialbahn durchgeschnitten. Die Schwenkung des Hohlkörpers erfolgt beispielsweise durch einen nicht dargestellten Exzenter od. dgl., der über eine Stange auf einen Zapfen 9 einwirkt, der an einem Hebel 10 des Hohlkörpers befestigt ist.The shearing device has a cylindrical hollow body 1 which is rotatably mounted on a mandrel 2 at two bearing points 3, 4. The mandrel 2 is rigidly attached to the only indicated machine frame 5, for example a packaging machine. The hollow body 1 has two recesses 6 and 7 through which the web of material 8 to be cut (FIG. 2) is guided by means of special guides, not shown. The mandrel 2 is approximately semicircular in cross section in the area of the recesses 6, 7. It has a cutting edge la (Fig. 2), while the hollow body carries the counter-cutting edge la, which is arranged on the inner edge of the recess 7. The two cutting edges la, la are guided past one another by pivoting the hollow body 1 in the direction of the arrow (FIG. 2) and the material web is thereby cut. The pivoting of the hollow body takes place, for example, by an eccentric or the like, not shown, which acts via a rod on a pin 9 which is attached to a lever 10 of the hollow body.

An den beiden Lagerstellen 3 und 4 sind am Dorn 2 Messingsegmente 11 angeordnet, die zum Ausgleich des Lagerspiels durch Schraubenfedern 12 gegen die Innenwand des Hohlkörpers 1 gedruckt werden. Um zu erreichen, daß die beiden Schneidkanten la, la spitzwinklig zueinander verlaufen,At the two bearings 3 and 4, brass segments 11 are arranged on the mandrel 2, which are pressed against the inner wall of the hollow body 1 by helical springs 12 to compensate for the bearing play. In order to ensure that the two cutting edges la, la run at an acute angle to one another,

709 679/314709 679/314

Claims (3)

was für einen sauberen Schnitt notwendig ist, weist der Dorn 2 im Lager 4 einen etwas kleineren Radius auf, so daß seine Achse 13 gegenüber der Achse 14 des Hohlkörpers unter der Wirkung des gefederten Segments 11 etwas versetzt wird, wie dies in F i g. 4 dargestellt ist. Der Hohlkörper 1 ist somit an der äußeren Lagerstelle 4 gegenüber dem Dorn 2 etwas exzentrisch gelagert. Bei der dargestellten Ausführungsform der Schervorrichtung verläuft die Schneidkante la parallel zur Achse des Dornes2, während die Schneidkante la am Hohlkörper 1 leicht schraubenlinienförmig verläuft. Selbstverständlich könnten die Verhältnisse ebensogut umgekehrt gewählt werden. Es ist aber auch denkbar, daß beide Schneidkanten die Gestalt einer Schraubenlinie aufweisen, wobei sich diese in bezug auf ihre Steigung unterscheiden. Patentansprüche:What is necessary for a clean cut, the mandrel 2 in the bearing 4 has a slightly smaller radius, so that its axis 13 is slightly offset from the axis 14 of the hollow body under the action of the sprung segment 11, as shown in FIG. 4 is shown. The hollow body 1 is thus mounted somewhat eccentrically at the outer bearing point 4 with respect to the mandrel 2. In the illustrated embodiment of the shearing device, the cutting edge la runs parallel to the axis of the mandrel 2, while the cutting edge la on the hollow body 1 runs slightly helically. Of course, the conditions could just as well be chosen the other way round. But it is also conceivable that both cutting edges have the shape of a helix, these differing in terms of their pitch. Patent claims: 1. Schervorrichtung zum Zerschneiden einer Materialbahn, insbesondere einer Papier- oder Kunststoffbahn, mittels eines festen und eines um seine Längsachse drehbaren Messers, von denen eines zwei gegenüberliegende, miteinander verbundene und zur Längsachse etwa parallele öffnungen für die Materialbahn mit einer Schneidkante aufweist, dadurch gekennzeichnet, daß das mit gegenüberliegenden öffnungen (6, 7) versehene Messer ein zylindrischer Hohlkörper (1), das andere Messer ein im Innern des Hohlkörpers (1) angeordneter, im Bereich der Öffnungen (6, 7) im Querschnitt halbkreis- oder kreisabschnittförmiger Dorn (2) ist und daß die Schneidkanten (la, 2a) von Hohlkörper (1) und Dorn (2) an der Schnittstelle spitzwinklig zueinander angeordnet sind.1. Shearing device for cutting a web of material, in particular a paper or Plastic sheet, by means of a fixed knife and a knife rotatable about its longitudinal axis, of which one of two opposing openings that are connected to one another and approximately parallel to the longitudinal axis for the material web with a cutting edge, characterized in that that the knife provided with opposing openings (6, 7) is cylindrical Hollow body (1), the other knife is arranged in the interior of the hollow body (1), in the area of the openings (6, 7) in cross-section semicircular or circular segment-shaped mandrel (2) and that the cutting edges (la, 2a) of the hollow body (1) and mandrel (2) are arranged at an acute angle to one another at the interface. 2. Schervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Hohlkörper (1) in einer (4) seiner beiden Lagerstellen (3, 4) exzentrisch auf dem Dorn (2) gelagert ist.2. Shearing device according to claim 1, characterized in that the hollow body (1) in one (4) of its two bearing points (3, 4) is mounted eccentrically on the mandrel (2). 3. Schervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß an den Lagerstellen (3,4) des Hohlkörpers (1) am Dorn (2) durch Federn (12) vorgespannte Segmente (11) angeordnet sind.3. Shearing device according to claim 1, characterized in that at the bearing points (3, 4) of the hollow body (1) arranged on the mandrel (2) by springs (12) prestressed segments (11) are. In Betracht gezogene Druckschriften:
Deutsche Auslegeschrift Nr. 1 061 253.Considered publications:
German interpretative document No. 1 061 253. Hierzu 1 Blatt Zeichnungen1 sheet of drawings 709 679/314 10. 67 © Bundesdruckerei Berlin709 679/314 10. 67 © Bundesdruckerei Berlin
DESCH36655A 1964-04-22 1965-03-09 Shearing device for cutting a web of material Pending DE1253034B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH518064A CH410763A (en) 1964-04-22 1964-04-22 Shearing device for cutting a web of material

Publications (1)

Publication Number Publication Date
DE1253034B true DE1253034B (en) 1967-10-26

Family

ID=4289248

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH36655A Pending DE1253034B (en) 1964-04-22 1965-03-09 Shearing device for cutting a web of material

Country Status (3)

Country Link
CH (1) CH410763A (en)
DE (1) DE1253034B (en)
GB (1) GB1032949A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496006A1 (en) * 1980-12-15 1982-06-18 Polygraph Leipzig DEVICE FOR CROSS-CUTTING THE PAPER BAND, IN PARTICULAR IN THE BRAKES OF ROTARY PRINTERS
DE4030600A1 (en) * 1990-09-27 1992-04-02 Siemens Ag Single sheet cutter for printer - has rotary blade elements that may be used to increment paper for next cycle
EP0673729A1 (en) * 1994-03-16 1995-09-27 Grapha-Holding Ag Device for cutting printed products

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE343767B (en) * 1969-11-26 1972-03-20 Mediplast Ab
US4015498A (en) * 1975-09-24 1977-04-05 Milliken Research Corporation Cutter
US4116748A (en) * 1976-11-08 1978-09-26 Corban Industries, Inc. Dry wall taping machine having an improved tape shear
FR2569603B1 (en) * 1984-08-31 1986-09-05 Smh Alcatel KNIFE FOR SECTIONING A TAPE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061253B (en) * 1956-12-21 1959-07-09 Rose Brothers Ltd Cutting device for paper webs or the like, especially for wrapping machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061253B (en) * 1956-12-21 1959-07-09 Rose Brothers Ltd Cutting device for paper webs or the like, especially for wrapping machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496006A1 (en) * 1980-12-15 1982-06-18 Polygraph Leipzig DEVICE FOR CROSS-CUTTING THE PAPER BAND, IN PARTICULAR IN THE BRAKES OF ROTARY PRINTERS
DE4030600A1 (en) * 1990-09-27 1992-04-02 Siemens Ag Single sheet cutter for printer - has rotary blade elements that may be used to increment paper for next cycle
EP0673729A1 (en) * 1994-03-16 1995-09-27 Grapha-Holding Ag Device for cutting printed products
CH687371A5 (en) * 1994-03-16 1996-11-29 Grapha Holding Ag Device for trimming printed products.
US5832799A (en) * 1994-03-16 1998-11-10 Grapha-Holding Ag Device for trimming edges from printed documents

Also Published As

Publication number Publication date
GB1032949A (en) 1966-06-15
CH410763A (en) 1966-03-31

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